Please read the following paragraph regarding "Affidavit of Support" in the Instructions of the official I-485 form:
-- Affidavit of Support: an Addidavit of Support (Form I-864) if your adjustment of status application is based on your entry as a fiance(e), a relative visa petition (Form I-130) filed by your relative, or an employment based visa petition (Form I-140) related to a business that is five percent or more owned by your family.
According to the above, I should not provide Form I-864 since my family doesn't own 5% or more the business of my employer.
This is my understanding only. Any comments please ...